phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '3f7a23d12b6be9aab5829cd368561cec' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('3f7a23d12b6be9aab5829cd368561cec', -1, 1768165442, 1768165442, 'd849d8a2', 10, 0, 0)

Line : 187
File : sessions.php